Two gentle giants must swim up a Florida river to escape the chill of winter. Along the way, Little Calf dives deep — and gets tangled in a clump of water-weeds. Can his mother save him? This bountiful series introduces young readers to a myriad of animals who inhabit the earth's wet wonderlands. -- A Parents' Choice Approval for 19 title book and tape series. -- Each book includes an informative note and glossary full of fascinating facts confirmed by the Smithsonian Institution curators. -- Read-along cassettes incorporate authentic sea sounds, such as real-life recordings of dolphins and whales. -- Toys authenticated by Smithsonian Institution curators for realism.